C++ project compile error after switching to 4.20 from 4.19


I know how to switch c++ projects to a different engine version and i already did it many times but this time I have two errors in VS2017 version 15.7.5

Have you tried nuking binaries/build/intermediate/saved folders and your solution file?

yes . I first deleted those folders

i can do it for a clean CPP project but not my own project.

If you look in the output window rather than error list, is there more information?

this is output file

i found my problem after looking at output logs.


Can you explain me please, where mistake is in the log file ?

In Visual Studio, Debug->Windows->Output

Ran into a similar problem, found a solution for myself.

Try updating MS Visual Studio: Update Visual Studio | Microsoft Docs